Cross promotions are cool if done correctly. Bioware is doing such a thing with Mass Effect 3 (demo just announced to be released 2/14/12) and Kingdoms of Amalur (already out).

When you boot up the Mass Effect 3 demo, you’ll get access to a version of Shepard’s famous N7 armour in fantasy RPG, Kingdoms of Amalur. Beat the demo and you’ll unlock a pair of “Omniblades” which look just like Shepard’s glowing techno arm-spikes.

It goes the other way, too. Playing the Kingdoms of Amalur demo will grant you Reckoner Knight Armour and a “Chakram Launcher” in Mass Effect 3. Both items are designed by comic book artist Todd McFarlene. Get a closer look at all the bonus gear in the screenshots below.

Make sure you check out both demos and enjoy the free in-game swag.